No Overnight Parking, Unauthorized Vehicles Will Be Towed Label, 18" x 12" Bold colors, a clear graphic and large lettering make this label easily visible from a distance. Label can be posted in a conspicuous area to alert unknowing drivers. Label face is applied to existing aluminum signs. Use this label to update a legend or place a fresh, new label face onto a sign that has faded. Engineer grade eflective sign complies with DOT regulations for parking lots. Label shines brilliantly when exposed to your cars headlights.